Exergy and economic assessment of renewable electricity generation from sugarcane straw for improved efficiency of sugarcane biorefineries

Autor(es)

Ortiz, Pablo A. Silva ; Florez-Orrego, Daniel ; Mariano, Adriano Pinto ; Kafarov, Vyacheslav ; De Oliveira Junior, Silvio ; Maciel Filho, Rubens

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF EXERGY; v. 38, n. 2, p. 20-pg., 2022-01-01.

Resumo

This work focuses on the revamp of existing sugarcane biorefineries and cogeneration units by using those byproducts, aiming to increase the selling of surplus electricity. The analysis allows identifying potential improvements in the sugarcane cogeneration plants. Simulation processes are employed to denote incremental modifications related to sugarcane straw recovery achieved in the harvesting systems. The results show that the straw recovery through harvesting systems may increase the surplus electricity by up to 30% when sugarcane biorefineries consider the maximum straw recovery fraction. Moreover, the increment in the exergy cost of the straw gathering influences the extended exergy efficiency of the cogeneration unit and, consequently, the entire sugarcane biorefinery. In brief, the capitalisation on sugarcane residues may increase the contribution of this industry to the decarbonisation of the Brazilian electricity mix and increment of profits resulting from the negotiation of decarbonisation credits in the Brazilian sugarcane market. (AU)

• Processo FAPESP: 15/20630-4 - Desenvolvimento integrado de biorrefinaria e planta de bioetanol de cana-de-açúcar com emissão zero de CO2: rotas para converter recursos renováveis em bioprodutos e bioeletricidade
• Beneficiário: Rubens Maciel Filho
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/03091-8 - Avaliação técnico-econômica e ambiental das tecnologias de biorrefinaria
• Beneficiário: Pablo Andrés Silva Ortiz
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado